It's a kosher product (star-K).
I am unaware of any vape juice that is kosher "certified". A google search turned up empty for any kosher
vaping eliquid or device with kosher eliquid. Would be silly to have kosher vape juice - if you do research on why, you'll know.
The other image beside the star-K seems to be a crossed-out conical flask and I believe that signifies "chemical-free".
There are, however, kosher CBD products.
Did you smell it?
Looks dirty. Could have been stuck to someone's shoe and brought inside.
Could be anything really.